ETA1918S datasheet(1/1 Pages) ETA

부품명	ETA1918S

상세설명	2.5A, 3MHz Switching Charger with Dynamic Power Path Management

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제조업체	ETA [ETA SOLUTIONS CO. LIMITED]

홈페이지	http://www.etasolution.com

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ETA1918S

www.ETAsolution.com

Outperform with Efficiency

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2.5A, 3MHz Switching Charger with Dynamic Power Path Management

DESCRIPTION

ETA1918S is a switching Li-Ion battery charger with dynamic power-path control and input current limiting. When a battery is connected,

depending on the battery voltage, the DC-DC switching regulator either pre-conditions, fast-charges the battery or just regulates a system

voltage (VSYS) to a preset voltage. It does not require an external sense resistor for current sensing. The charging current is determined by

programming ISET1 or ISET2 pin, depending on the state of the nUSB_DET. One should pull nUSB_DET low, if an USB adapter input is present,

the charge current is set by ISET2; otherwise, it is set by ISET1. When the battery voltage reaches the termination voltage i.e. 4.2V, the

charging path disconnects SYS to BATT. The ETA1918S also includes a dynamic power path when the SYS load current exceeds current limit

of the DCDC regulator internally set, the SYS voltage falls below VBATT, ETA1918S turns on the power-path to supplement the system load

through the battery.

FEATURES



Switching Charger with Power Path Management



Up to 95% DC-DC Efficiency



50mΩ Power Path MOSFET



Up to 2.5A Max charging current



Instant on with a dead Battery or no Battery



No battery detection



No External Sense resistor



Programmable USB and AC IN Charging Current

APPLICATIONS



Tablet, MID



Smart Phone



Power Bank

ORDERING INFORMATION

PART

PACKAGE PIN TOP MARK

ETA1918SQ3Q

QFN3X3-16

ETA-42

TYPICAL APPLICATION

2A Switching Charger with Dynamic Power Path

SYS

SW

PGND

IN

BATT

NTC

ISET1

ISET2

nUSB_DET

ENB

SYS

SYSTEM

LOAD

2.2uH

2.2K

2K

Ω

500

Ω

5V INPUT

22uF

10uF

1uF

유사한 부품 번호 - ETA1918S

제조업체	부품명	데이터시트	상세설명
ETA SOLUTIONS CO. LIMIT...	ETA1013	212Kb / 1P	12W Output Power, Programmable Frequency up to 1MHz Step-Up Converter
	ETA1013E8A-T	212Kb / 1P	12W Output Power, Programmable Frequency up to 1MHz Step-Up Converter
	ETA1017	118Kb / 1P	10關A IQ, 0.85V Startup, 1MHz, 300mA IOUT Synchronous Step-Up DC-DC
	ETA1019	188Kb / 1P	Low Voltage Startup, 1MHz 500mA Synchronous Step-Up DC-DC
	ETA1020	110Kb / 1P	3-pin Low Voltage Startup, 1MHz 500mA Synchronous Step-Up DC-DC

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유사한 설명 - ETA1918S

제조업체	부품명	데이터시트	상세설명
Intersil Corporation	ISL9301	195Kb / 12P	High Input Voltage Charger With Power Path Management February 25, 2008
Texas Instruments	BQ24272	1Mb / 32P	2.5A, Single Input, Single Cell Switchmode Li-Ion Battery Charger with Power Path Management
Texas Instruments	BQ24278	1Mb / 29P	2.5A, Single Input, Single Cell Switchmode Li-Ion BATTERY CHARGER with Power Path Management
Intersil Corporation	ISL9301IRZ	386Kb / 12P	High Input Voltage Charger With Power Path Management September 21, 2011
ACE Technology Co., LTD...	ACE4102E	632Kb / 9P	2.5A, 3MHz Switching Charger with Dynamic Power Path Management VER 1.1
Renesas Technology Corp	ISL9301	571Kb / 12P	High Input Voltage Charger With Power Path Management
ETA SOLUTIONS CO. LIMIT...	ETA6003	187Kb / 1P	2.5A, 3MHz Switching Charger with Dynamic Power Path Management
	ETA6002	173Kb / 1P	2.5A, 3MHz Switching Charger with Dynamic Power Path in 8-pin ESOP
	ETA6005	186Kb / 1P	2.5A / 4.35V, 3MHz Switching Charger with Dynamic Power Path Management
	ETA6102	173Kb / 1P	2.5A, 3MHz Switching Charger with Dynamic Power Path in 8-pin ESOP

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유사한 부품 번호 - ETA1918S

유사한 설명 - ETA1918S

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